[RikaStrom]

Just move the decimal point over one for 10%. Double that to tip 20%, estimate between the two for rates inbetween. ;-)

(blinks)

(looks at it again)

Seriously?! Well crap. You know I sat there and figured for 20%.

I knew to move it over for 10%, that was easy. It absolutely never occurred to me to just double the 10% value to get 20%.

(sigh) LOL.

Thanks SD, that is the best practical advice I have ever received on tip figuring.

You have a good night, I think I hear a nice, uncomplicated book calling my name. :-)

And thanks again for the tip, I'm going to Vegas on Tuesday so this will help me tremendously.

[SoothingDave]

There might as well be some useful math on this thread. ;-)

Works the other way, too, if you ever need to multiply something by 5 (like sales tax). Just move the decimal and take half.